The purpose of this study was to investigate the relationship between leadership style and rnAcademic Optimism in secondary schools of Batu City Administration in Oromia regional state.rnTo achieve the study objective, descriptive and to some extent an explanatory research design rnalong with both quantitative and qualitative data /mixed method research approach was rnemployed, and data was collected through the use of questionnaires and semi-structured interviews and rndocument review .This study used / 192/ respondents randomly selected using lottery method and rnpurposive sampling method .The study was carried out in six purposively selected secondaryrnschools of Batu City Administration .Then a total of 131 teachers,6 principals, 12 vice rnprincipals, 35 department heads and 2 supervisors and 6 CAEO experts ware used in the data rncollection . Both descriptive and inferential analysis was to analyze the responses. The data rnobtained from primary sources were analyzed with descriptive statistics such as frequency, rnpercentage, mean and standard deviation and inferential statistics such as correlation and rnregression. Statistical package for social sciences (version 24) was use in running the outcomes rnof the study. The descriptive statistics result shows that the employees exhibited an ambivalent rnmoderate level of academic optimism and the less dominant leadership style at the organization rnwas democratic leadership. The result of the correlation analysis indicated that democratic rnand laissez fair kind of leadership style has a positive relationship with academic optimism. The rnregression test shows that there was significant effect of types of leadership on academic rnoptimism and the most commonly used style of leadership in selected secondary schools were the rnautocratic leadership style and has insignificant effect on academic optimism of teachers or rnemployee commitment. Therefore it is concluded that due attention should be given for rndemocratic types of leadership implemented in the organization from education stakeholders in rnorder to improve school academic optimism found at moderate rate. Finally, it has been rnrecommend that the educational leaders will be equipped with the appropriate type of leadership rnstyle that is significant and positively related with employees’ commitment in the organizations rnto enhance culture of academic optimism in the school